Github user radarwave commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/1211#discussion_r110341344
--- Diff: tools/bin/hawqpylib/hawqlib.py ---
@@ -203,6 +203,13 @@ def check_hostname_equal(remote_host, user = ""):
cmd = "hostname"
result_local, local_hostname, stderr_remote = local_ssh_output(cmd)
result_remote, remote_hostname, stderr_remote = remote_ssh_output(cmd,
remote_host, user)
+ if result_remote != 0:
+ print "Execute command '%s' failed with return code %d on %s." %
(cmd, result_remote, remote_host)
+ print "Either ssh connection fails or command exits with error.
Details:"
+ print stderr_remote
+ print "For ssh connection issue, please make sure passwordless ssh
is enabled or check remote host."
--- End diff --
Although a simple command, it's possible the remote OS have some issue can
cause failures. So not only the ssh connection error.
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